In response to a late deceleration during labor, which action should be carried out FIRST?

• A. Turn Susan on her left side
• B. Administer oxygen by mask
• C. Increase IV fluids
• D. Call the physician

Answer: (A)

Late decelerations signal reduced fetal oxygenation from uteroplacental insufficiency, so the first move is to reposition the mother to her left side. Lying on the left side relieves pressure from the uterus on the large blood vessels, improves venous return, increases placental perfusion, and enhances fetal oxygen delivery, which can help alleviate the decelerations.

After this initial step, continue with supportive measures as needed: provide oxygen by mask to raise fetal oxygen content, assess maternal status and adjust fluids if there’s hypotension or signs of poor perfusion, and review any factors like ongoing oxytocin that could contribute to distress. If the fetal tracing remains non-reassuring after these efforts, escalate care and notify the physician promptly, preparing for possible delivery if indicated.